//
// Mono.Math.Prime.Generator.PrimeGeneratorBase.cs - Abstract Prime Generator
//
// Authors:
//	Ben Maurer
//
// Copyright (c) 2003 Ben Maurer. All rights reserved
//

using System;

namespace Mono.Math.Prime.Generator {

	internal abstract class PrimeGeneratorBase {

		public virtual ConfidenceFactor Confidence {
			get {
				return ConfidenceFactor.Medium;
			}
		}

        public virtual Prime.PrimalityTest PrimalityTest
        {
            get
            {
                return new Prime.PrimalityTest(PrimalityTests.SmallPrimeSppTest);
            }
        }

		public virtual int TrialDivisionBounds {
			get { return 4000; }
		}

        /// <summary>
        /// Performs primality tests on bi, assumes trial division has been done.
        /// </summary>
        /// <param name="bi">A BigInteger that has been subjected to and passed trial division</param>
        /// <returns>False if bi is composite, true if it may be prime.</returns>
        /// <remarks>The speed of this method is dependent on Confidence</remarks>
        protected bool PostTrialDivisionTests(BigInteger bi)
        {
            return PrimalityTest(bi, this.Confidence);
        }

		public abstract BigInteger GenerateNewPrime (int bits);
	}
}
